"Bathe foes in a fiery flood of scalding plasma! Both air and ground troops will feel the burn!"
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Summary
The Roaster is a Defensive Building in the Builder Base that is unlocked at Builder Hall level 6.
It shoots short plasma bursts at its enemies that deals splash damage. Its damage per hit is very low but its high fire rate makes up for this.
It can burn both air and ground troops.
Defensive Strategy
The Roaster is a great counter to the Night Witch and her Bats. Its splash damaging attack makes it able to take out many bats, allowing other defenses to destroy the Night Witches, so placing it near ground targeting defenses can protect them.
The Roaster can be placed near the Builder Hall to prevent Raged Barbarians or any other low hitpoint units from destroying it.
Due to the Roaster's short range, placing it on one side of the Builder Hall cannot prevent Sneaky Archers from destroying the Builder Hall from the other side.
Offensive Strategy
Try to put units with a lot of hitpoints in front of support units with less hitpoints to distract it from shooting the support units. The Battle Machine works great.
Try to scatter the troops so it doesn't hit every troop at once.
Upgrade Differences
It undergoes significant visual changes at nearly all of it's levels, but mainly level 3.
At level 1, the Roaster looks like a metal vessel secured by wood planks that are tied up by ropes.
At level 2, the ropes are replaced by a plank rim.
At level 3, the wooden frame is replaced by two fences and the outside turns orange. A heptagon is also added at the top.
At level 4, the lower part of the vessel turns red and a ladder leading to the muzzle of the vessel.
At level 5, the fences are replaced with a stone rim and the heptagon at the top turns yellow.
At level 6, the stone rim get another layer and the ladder is replaced by metal one.
Trivia
The Roaster was added on 6/27/2017.
The roaster seems to have parts of its "scafolding" removed with each level.
Icon Descriptions
Tapping this icon displays information about the Roaster, such as Level, Damage Per Second, Hitpoints, Range, Damage Type and Targets.
Tapping this icon begins upgrading the Roaster to the next level, if you have enough resources and a free Builder (or B.O.B). When the Roaster is at maximum level, this icon is not shown.
Tapping this icon instantly upgrades the Roaster to the next level, at the cost of one Hammer of Building if you have one. When the Roaster is at maximum level, or if the Town Hall requirements for the next level are not met, this icon is not shown.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of the displayed number of Gems.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Building. This icon is only shown if you have at least one Book of Building.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of one Book of Everything. This icon is only shown if you have at least one Book of Everything but do not have a Book of Building.
Tapping this icon, which is displayed only while an upgrade is in progress, boosts all your Builders for 1 hour by a factor of ten, at the cost of one Builder Potion. This icon is only shown if you have at least one Builder Potion.
Tapping this icon, which is displayed only while an upgrade is in progress, cancels the current upgrade and refunds half of the upgrade cost.
